NATURAL SCIENCES OF PHILADELPHIA. 435 







Central Pacific Ocean. In all, about three thousand specimens, 



including types of man}^ new species. 

 Lea, I. Unio incrassatus, Lea, Georgia; and Unio Forhesianus, 



Lea, Abbeville Dist., S. C 

 RuscHENBERQER, Dr. W. S. W. Three species of Marine MoUusks 



from Porto Venere, Spezzia, and three species of Helices, from 



Pompeii. 

 Stearns, R. E. C. Fifty species Marine Mollusca, from Coast of 



California, principally new to the Academ^^'s collection. Also 



types of several new species from Florida, to be described in 



the Academy's Proceedings. 

 Wetherby, a. G. Helix fallax, Say, and Goniobasis sordida, 



Lea, Pearson's Creek, Mo. 

 WiLLCOX, Jos. Helix albolabris, S. W. North Carolina. 



The work of the Committee on the arrangement of the Cabinet 

 has been prosecuted during the year with extraordinary industrj', 

 and it affords your Conservator lively satisfaction to be able to 

 report the conclusion of tlie Committee's labors, and the complete 

 arrangement of the collection of shells. At the end of 1872, 

 40,873 specimens of 6893 species had been supplied with 12.067 

 labels, and placed systematically in the cases. During the past 

 year 35,606 specimens of 7268 species have been cleansed, oiled, 

 and arranged in trays, and 12,218 labels written, thus showing a 

 laro-er amount of work done in this one vear than had been com- 

 pleted in the six preceding years. The collection is, probably, in 

 every respect the finest in the world, and represents nearl}^ all the 

 good species described; a very large synonymy amounting to, 

 perhaps, several thousand names being eliminated during the 

 progress of arrangement. Many of the families and genera are 

 very complete. Among those arranged this j^ear, the UnionidiB 

 may be mentioned, consisting of 783 species and 3592 specimens 

 contained in 1555 trays. 



Dr. Hassler has continued to arrange' the duplicate specimens 

 for sale, and reports the total number of lots placed in the hands 

 of Mr. Kline to December 4, to be 4936, valued at $796. The 

 total amount received from sales is $i71. This, together with 

 sundry contributions from members, has been used in procuring 

 144 drawers, vvhich have been placed under the horizontal cases 

 to permit of the extended arrangement of the collection. 



